The structural patterns formed by molecular self-assembly at surfaces are usually controlled by the relative strengths of the intermolecular and molecule-substrate interactions. An additional steering effect is present when the substrate can easily reconstruct upon molecular adsorption, which therefore drives a self-templating effect on the metal support. This is here demonstrated for the model case of Fe-phthalocyanine molecules adsorbed on the Au(110) surface. Scanning tunneling microscopy shows that molecular adsorption promotes a local (1 × 5) surface reconstruction, which drives the assembly of molecular chains along the [11̄0] direction. The order and periodicity of the molecular assemblies are determined with low energy electron diffraction patterns. Density functional theory calculations reveal the energetic origins of the molecule-driven substrate reconstruction. Since the function of molecular overlayers at surfaces is strongly correlated to their structure, these results have implications in the design of new metal/molecular interfaces. © 2012 American Chemical Society.

Molecule-driven substrate reconstruction in the two-dimensional self-organization of Fe-phthalocyanines on Au(110) / Sara, Fortuna; Gargiani, Pierluigi; Betti, Maria Grazia; Mariani, Carlo; Arrigo, Calzolari; Silvio, Modesti; Stefano, Fabris. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 116:10(2012), pp. 6251-6258. [10.1021/jp211036m]

Molecule-driven substrate reconstruction in the two-dimensional self-organization of Fe-phthalocyanines on Au(110)

GARGIANI, PIERLUIGI;BETTI, Maria Grazia;MARIANI, CARLO;
2012

Abstract

The structural patterns formed by molecular self-assembly at surfaces are usually controlled by the relative strengths of the intermolecular and molecule-substrate interactions. An additional steering effect is present when the substrate can easily reconstruct upon molecular adsorption, which therefore drives a self-templating effect on the metal support. This is here demonstrated for the model case of Fe-phthalocyanine molecules adsorbed on the Au(110) surface. Scanning tunneling microscopy shows that molecular adsorption promotes a local (1 × 5) surface reconstruction, which drives the assembly of molecular chains along the [11̄0] direction. The order and periodicity of the molecular assemblies are determined with low energy electron diffraction patterns. Density functional theory calculations reveal the energetic origins of the molecule-driven substrate reconstruction. Since the function of molecular overlayers at surfaces is strongly correlated to their structure, these results have implications in the design of new metal/molecular interfaces. © 2012 American Chemical Society.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Molecule-driven substrate reconstruction in the two-dimensional self-organization of Fe-phthalocyanines on Au(110) / Sara, Fortuna; Gargiani, Pierluigi; Betti, Maria Grazia; Mariani, Carlo; Arrigo, Calzolari; Silvio, Modesti; Stefano, Fabris. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 116:10(2012), pp. 6251-6258. [10.1021/jp211036m]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/441825
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